Joke Collection Website - Mood Talk - Incredible facts about the galaxy.
Incredible facts about the galaxy.
1. The diameter of the Milky Way is about120,000 light years, and there is a thickened part in the middle. But its shape is far from perfect and flat, and it looks a bit "deformed".
According to scientists, there are about 200 billion stars in the Milky Way. In contrast, the largest known galaxy IC 1 10 1 has more than one trillion stars, 500 times more.
In Greek mythology, when Heracles was protected and Hera spilled milk, the Milky Way was born.
The Milky Way has four spiral arms and contains most stars. All known creatures are near the center of Poerxiusi's arm.
At the center of the Milky Way is a supermassive black hole, one million times larger than our sun. The earth is about 27,000 light years away from this wonder of the universe.
6. Although the average speed of the solar system is 828,865,438+02 km/h, it still takes about 230 million years to orbit the whole galaxy.
7. Astronomers believe that the stars, planets, asteroids and dust we see only account for one tenth of the total mass of the Milky Way. The remaining 90% is called dark matter.
It is estimated that seven new stars are formed in the Milky Way every year. They are formed by gas and stardust, which is the residue of other substances after explosion.
9. The collision between the Milky Way and Andromeda galaxy is inevitable. The good news is that it will take about 4.5 billion years. Moreover, because the density of stars in these galaxies is very low, they are likely to pass through each other without any significant impact.
10. These two galaxies are part of more than 54 galaxies called local group. The largest galaxy is Andromeda, the Milky Way ranks second, and the Triangle galaxy ranks third.
1 1. All the stars in our galaxy only account for 3% of its mass.
12. Although there are billions of stars, only 2500 of them can be seen with standard telescopes.
13. Our planet is located in the center of the livable area of the Milky Way. The closer we are to the center of the Milky Way, the stronger the cosmic radiation will be.
14. Because of its huge mass, our galaxy usually attracts stars from other smaller clusters.
15. Scientists estimate that our universe existed less than1400 million years ago. In this case, the age of the Milky Way is estimated to be 1 135 to133.6 billion years, which is almost the same as the age of the universe.
16. The Milky Way does not always have a beautiful curved spiral shape like today. It must absorb countless other galaxies to reach this shape.
17. Just as there are satellites on the earth, so do the Milky Way. These are relatively small clusters (by cosmic standards).
18. The Milky Way and Andromeda are approaching each other at a speed of 140 kilometers per second.
19. Omega Centauri globular cluster was once a dwarf galaxy, but most of its stars have been absorbed by the Milky Way.
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